SE467503B - COMBUSTOR FUNCTION ENGINE - Google Patents

COMBUSTOR FUNCTION ENGINE

Info

Publication number
SE467503B
SE467503B SE9003735A SE9003735A SE467503B SE 467503 B SE467503 B SE 467503B SE 9003735 A SE9003735 A SE 9003735A SE 9003735 A SE9003735 A SE 9003735A SE 467503 B SE467503 B SE 467503B
Authority
SE
Sweden
Prior art keywords
cylinder
valve
exhaust
piston
open
Prior art date
Application number
SE9003735A
Other languages
Swedish (sv)
Other versions
SE9003735L (en
SE9003735D0 (en
Inventor
M Sabelstroem
Original Assignee
Volvo Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volvo Ab filed Critical Volvo Ab
Priority to SE9003735A priority Critical patent/SE467503B/en
Priority to US08/064,135 priority patent/US5315974A/en
Publication of SE9003735D0 publication Critical patent/SE9003735D0/en
Priority to JP50010292A priority patent/JP3326173B2/en
Priority to EP91920619A priority patent/EP0558585B1/en
Priority to DE69110054T priority patent/DE69110054T2/en
Priority to PCT/SE1991/000791 priority patent/WO1992009792A1/en
Publication of SE9003735L publication Critical patent/SE9003735L/en
Publication of SE467503B publication Critical patent/SE467503B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0696—W-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L25/00—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means
    • F01L25/02—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0645—Details related to the fuel injector or the fuel spray
    • F02B23/066—Details related to the fuel injector or the fuel spray the injector being located substantially off-set from the cylinder centre axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/06—Cutting-out cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/14—Direct injection into combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

467 505 2 Syftet med föreliggande uppfinning är att åstadkoma en för- bränningsmotor av i inledningen angivet slag, vid vilken bräns- letillförseln till en som kompressorcylinder tjänstgörande cylinder kan avbrytas utan att motorns insprutningssystem behöver kompletteras med komplicerad, särskilt för detta ända- mål avsedd utrustning. The object of the present invention is to provide an internal combustion engine of the type indicated in the introduction, in which the fuel supply to a cylinder serving as a compressor cylinder can be interrupted without the engine injection system having to be supplemented with complicated equipment, especially for this purpose. .

Detta uppnås enligt uppfinningen genom att motorn är försedd med ett i och för sig känt bränsleinsprutningssystem med en s k enhetsspridare med elektriskt manövrerad spillventil för varje cylinder och att organ är anordnade, som kan hålla spill- ventilen hos den med den extra utblåsventilen försedda cylin- dern öppen samtidigt som utblåsventilen är öppen.This is achieved according to the invention in that the engine is provided with a per se known fuel injection system with a so-called unit spreader with electrically operated spill valve for each cylinder and that means are provided which can hold the spill valve of the cylinder provided with the extra exhaust valve. open while the exhaust valve is open.

I insprutningssystem med elektriskt reglerade enhetsspridare (electric unit injectors) är en elektronisk styrenhet kopplad till en solenoidventil i varje spridare. Denna ventil bestämmer i beroende av signaler från styrenheten när insprutningen till resp. cylinder skall börja och sluta. När ventilen stänger, bygger den i enhetsspridaren integrerade pumpkolven upp ett tryck och insprutningen startar, då detta tryck uppgår till insprutningsmunstyckets öppningstryck. När insprutningen skall avslutas, öppnas solenoidventilen varvid trycket sjunker under insprutningsmunstyckets öppningstryck. Bränsletillförseln till en bestämd cylinder kan således stängas av helt enkelt genom insignal till styrenheten att öppna tillhörande spridares spillventil, när cylindern skall fungera som kompressor- cylinder.In injection systems with electrically controlled unit injectors, an electronic control unit is connected to a solenoid valve in each injector. This valve determines, depending on signals from the control unit, when the injection to resp. cylinder should start and end. When the valve closes, the pump piston integrated in the unit spreader builds up a pressure and the injection starts, when this pressure amounts to the opening pressure of the injection nozzle. When the injection is to be terminated, the solenoid valve is opened, the pressure drops below the opening pressure of the injection nozzle. The fuel supply to a specific cylinder can thus be switched off simply by an input signal to the control unit to open the associated valve of the spreader, when the cylinder is to function as a compressor cylinder.

Uppfinningen beskrives närmare under hänvisning till på bifoga- de ritning visade utföringsexempel, där figuren visar ett tvärsnitt genom en schematiskt framställd cylinder med till- hörande del av cylinderhuvudet i en dieselmotor. 467 503 3 I figuren 1 betecknar 1 en del av ett cylinderblock och 2 en del av ett cylinderhuvud. Detaljer som insugnings- och avgas- kanaler med tillhörande ventiler samt övrigt, som inte direkt har med uppfinningen att göra, har utelämnats i förenklande syfte. Motorn är en direktinsprutad diesel och har en kolv 3 med en fördjupning 4, som bildar förbränningsrum. Den har ett bränsleinsprutningssystem med s k enhetsspridare 5, d v s spridare som var och en har en integrerad av en kamaxel 6 via en vipparm 7 driven pumpkolv och en av en elektromagnet 8 manövrerad spillventil 9 (endast antydd) för reglering av insprutningstiden.The invention is described in more detail with reference to exemplary embodiments shown in the accompanying drawing, in which the figure shows a cross section through a schematically produced cylinder with an associated part of the cylinder head in a diesel engine. 467 503 3 In Figure 1, 1 denotes a part of a cylinder block and 2 a part of a cylinder head. Details such as intake and exhaust ducts with associated valves and others, which are not directly related to the invention, have been omitted for simplification purposes. The engine is a direct-injected diesel and has a piston 3 with a recess 4, which forms combustion chambers. It has a fuel injection system with so-called unit injectors 5, i.e. injectors which each have an integrated piston piston driven by a camshaft 6 via a rocker arm 7 and a spill valve 9 operated by an electromagnet 8 (only indicated) for regulating the injection time.

Den i figuren visade cylindern har i sitt cylinderhuvud 2 en borrning 10 i vilken en spindel ll till en ventiltallrik 12 är förskjutbart lagrad. Borrningen 10 uppvisar ett steg 13. En skruvfjäder 14 är inspänd mellan steget 13 och en vid änden av spindeln 11 fixerad hylsa 15 och belastar ventiltallriken 12 mot ett ventilsäte 16 vid kanten av ett vidgat parti 17 av borrningen 10. Från det vidgade partiet 17 av borrningen sträcker sig en kanal 18 ut genom cylinderhuvudet. När ventil- tallriken 12 är lyft från sitt säte (streckade läget), kan kolven 3 vid sitt kompressionsslag pressa ut luft ur cylinder- rummet till ett tryckluftsystem via kanalen 18. En backventil 19 hindrar luft från att sugas in via kanalen 18 vid kolvens insugningsslag.The cylinder shown in the figure has in its cylinder head 2 a bore 10 in which a spindle 11 of a valve plate 12 is slidably mounted. The bore 10 has a step 13. A helical spring 14 is clamped between the step 13 and a sleeve 15 fixed at the end of the spindle 11 and loads the valve plate 12 against a valve seat 16 at the edge of a widened portion 17 of the bore 10. From the widened portion 17 of the bore a channel 18 extends through the cylinder head. When the valve plate 12 is lifted from its seat (dashed position), the piston 3 can, during its compression stroke, force air out of the cylinder space into a compressed air system via the duct 18. A non-return valve 19 prevents air from being sucked in via the duct 18 at the piston suction stroke .

I figuren betecknar 20 bränsleinsprutningssystemets elektronis- ka styrenhet, i vilken på känt sätt inmatas signaler represen- terande gaspådrag, motortemperatur m m för styrning av insprut- ningen. Styrenheten samverkar enligt uppfinningen med en tryck- alstrare 21, t ex en hydraulpump med reglerventiler, som komu- nicerar med borrningens 10 ovanför ventilspindeln belägna parti l0a. När ett komando, representerat av pilen "a" i figuren, ges till styrenheten 20 att cylindern skall arbeta som kom- “ Wxfl¶5\\q\;¿; 467 503 4 pressor, sätts borrningen I0a ovanför spindeln ll under tryck samtidigt som strömmen till elektromagneten 8 bryts. Härvid förskjuts ventiltallriken 12 till öppetläget samtidigt som spridarens 5 spillventil 9 ställs i öppet läge, varvid bränslet via en kanal 22 leds till en returledning 23.In the figure, 20 denotes the electronic control unit of the fuel injection system, in which signals representing throttle input, engine temperature, etc. are input in a known manner for controlling the injection. According to the invention, the control unit cooperates with a pressure generator 21, for example a hydraulic pump with control valves, which communicates with the portion 10a located above the valve stem 10. When a command, represented by the arrow "a" in the figure, is given to the control unit 20 that the cylinder should operate as a command- "Wx fl¶5 \\ q \; ¿; 467 503 4 presses, the bore I0a above the spindle 11 is put under pressure at the same time as the current to the electromagnet 8 is cut off. In this case, the valve plate 12 is moved to the open position at the same time as the spreader valve 9 of the spreader 5 is set in the open position, whereby the fuel is led via a channel 22 to a return line 23.

Komandot till styrenheten kan ges manuellt via manuella bryta- re (icke visade) eller automatiskt exempelvis via tryck- avkännare i ett till cylinderns kanal 18 anslutet tryckluft- system. I en flercylindrig motor kan en eller flera cylindrar vara utformade på ovan beskrivet sätt. Användningen av ett elektroniskt styrt enhetsspridarsystem gör det möjligt att på enkelt sätt koppla in kompressorfunktionen och att bestäma hur många cylindrar som vid varje tillfälle skall arbeta som komp- ressor.The command to the control unit can be given manually via manual switches (not shown) or automatically, for example via pressure sensors in a compressed air system connected to the channel 18 of the cylinder. In a multi-cylinder engine, one or more cylinders may be designed as described above. The use of an electronically controlled unit spreader system makes it possible to easily switch on the compressor function and to determine how many cylinders are to work as compressors at any given time.

Claims (3)

10 15 20 25 4e7,5oz 5 Patentkrav10 15 20 25 4e7,5oz 5 Patent claims 1. Förbränningsmotor med kompressorfunktion, innefattande - förutom insugnings- och avgasventiler för varje cylinder - en extra utblåsventil hos minst en cylinder, vilken utblåsventil i öppet läge förbinder cylinderrummet med en utblâskanal inne- hållande ventilorgan anordnade att medge utblåsning av insug- ningsluft till ett tryckluftsystem men hindra insugning av luft till cylinderrummet via nämnda utblåskanal, k ä n n e t e c k- n a d av att motorn har ett bränsleinsprutningssystem med en enhetsspridare (5) med elektriskt manövrerad spillventil (9) för varje cylinder och att organ (8, 20) är anordnade, som kan hålla spillventilen hos den med den extra utblåsventilen (ll, 12) försedda cylindern öppen samtidigt som utblâsventilen är öppen.An internal combustion engine with compressor function, comprising - in addition to intake and exhaust valves for each cylinder - an additional exhaust valve of at least one cylinder, which exhaust valve in open position connects the cylinder space with an exhaust duct containing valve means arranged to allow exhaust air to a compressed air system but prevent the intake of air into the cylinder space via said exhaust duct, characterized in that the engine has a fuel injection system with a unit spreader (5) with electrically operated spill valve (9) for each cylinder and that means (8, 20) are provided, which can keep the spill valve of the cylinder fitted with the auxiliary exhaust valve (11, 12) open at the same time as the exhaust valve is open. 2. Förbränningsmotor enligt krav 1, k ä n n e t e c k n a d av att den extra utblåsventilen har en ventiltallrik med en spindel (11), som samverkar med fjäderelement (14), vilka belastar ventilen mot stängt läge, och att organ (21) är anord- nade att hålla ventilen konstant öppen, när kolven (3) i till- hörande cylinder skall arbeta som kompressorkolv.Internal combustion engine according to claim 1, characterized in that the auxiliary exhaust valve has a valve plate with a spindle (11) which cooperates with spring elements (14), which load the valve against the closed position, and that means (21) are arranged to keep the valve constantly open, when the piston (3) in the associated cylinder is to act as a compressor piston. 3. Förbränningsmotor enligt krav 2, k ä n n e t e c k n a d av att spindeln (11) är upptagen i en borrning (10) med en som cylinder (10a) formad del och har ett som kolv tjänstgörande parti (15), att cylindern (10a) har ett inlopp för ett tryck- medium och att kolvpartiet (15) vid tillförsel av tryckmedium till cylindern belastar ventilen (12) mot öppet läge.Internal combustion engine according to claim 2, characterized in that the spindle (11) is accommodated in a bore (10) with a part formed as a cylinder (10a) and has a portion (15) serving as a piston, that the cylinder (10a) has an inlet for a pressure medium and that the piston portion (15) when supplying pressure medium to the cylinder loads the valve (12) towards the open position.
SE9003735A 1990-11-23 1990-11-23 COMBUSTOR FUNCTION ENGINE SE467503B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9003735A SE467503B (en) 1990-11-23 1990-11-23 COMBUSTOR FUNCTION ENGINE
US08/064,135 US5315974A (en) 1990-11-23 1990-11-23 Internal combustion engine with compressor function
JP50010292A JP3326173B2 (en) 1990-11-23 1991-11-21 Internal combustion engine with compressor function
EP91920619A EP0558585B1 (en) 1990-11-23 1991-11-21 Internal combustion engine with compressor function
DE69110054T DE69110054T2 (en) 1990-11-23 1991-11-21 INTERNAL COMBUSTION ENGINE WITH COMPRESSION FUNCTION.
PCT/SE1991/000791 WO1992009792A1 (en) 1990-11-23 1991-11-21 Internal combustion engine with compressor function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9003735A SE467503B (en) 1990-11-23 1990-11-23 COMBUSTOR FUNCTION ENGINE

Publications (3)

Publication Number Publication Date
SE9003735D0 SE9003735D0 (en) 1990-11-23
SE9003735L SE9003735L (en) 1992-05-24
SE467503B true SE467503B (en) 1992-07-27

Family

ID=20380992

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9003735A SE467503B (en) 1990-11-23 1990-11-23 COMBUSTOR FUNCTION ENGINE

Country Status (6)

Country Link
US (1) US5315974A (en)
EP (1) EP0558585B1 (en)
JP (1) JP3326173B2 (en)
DE (1) DE69110054T2 (en)
SE (1) SE467503B (en)
WO (1) WO1992009792A1 (en)

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DE4309860C1 (en) * 1993-03-26 1994-06-09 Daimler Benz Ag Device for control of compressed air in cylinder of IC engine - involves control valve with switch valve down stream from which air is controllable in conduit connected to accumulator or exhaust gas conduit
US5540201A (en) * 1994-07-29 1996-07-30 Caterpillar Inc. Engine compression braking apparatus and method
DE4433258C1 (en) * 1994-09-19 1996-03-07 Daimler Benz Ag Engine brake for a diesel engine
DE19514116A1 (en) * 1995-04-14 1996-10-17 Daimler Benz Ag Device for controlling air compressed in a cylinder of an internal combustion engine
US5507261A (en) * 1995-05-12 1996-04-16 Caterpillar Inc. Four cycle engine with two cycle compression braking system
SE512556C2 (en) * 1995-12-22 2000-04-03 Volvo Ab Method for reducing vibration in a vehicle and device for carrying out the method
US5735242A (en) * 1996-04-17 1998-04-07 Cummins Engine Company, Inc. Fuel pressure activated engine compression braking system
US5876526A (en) * 1996-06-07 1999-03-02 Quantum Electronics, Inc. Automotive flat tire repair system improvement
US5806499A (en) * 1997-03-18 1998-09-15 Cummins Engine Company, Inc. Dedicated overhead cam shaft for unit injector
US5758620A (en) * 1997-03-21 1998-06-02 Detroit Diesel Corporation Engine compression brake system
SE509524C2 (en) * 1997-06-04 1999-02-08 Volvo Lastvagnar Ab Internal combustion engine with AT controller
SE510835C2 (en) 1997-08-26 1999-06-28 Volvo Lastvagnar Ab Combustion engine with compressor function
US6216667B1 (en) 1999-11-12 2001-04-17 Frank J. Pekar Method and device for a supercharged engine brake
GB2405178A (en) * 2003-08-16 2005-02-23 Gordon Joseph Snadden Wilson Engine fuel economy system with cylinder deactivation
US8752519B2 (en) * 2009-12-15 2014-06-17 GM Global Technology Operations LLC Air assist start stop methods and systems
US10641140B2 (en) * 2017-05-12 2020-05-05 Caterpillar Inc. Hydraulic early engine exhaust valve opening system

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US2005536A (en) * 1933-03-24 1935-06-18 Westinghouse Electric & Mfg Co Auxiliary air arrangement for diesel locomotives
US4557232A (en) * 1982-06-01 1985-12-10 Delorean John Z Swash plate engine
ES8601390A1 (en) * 1984-10-22 1985-10-16 Ruiz Guinea Jose M Kinetic energy utilization system for use with vehicles with internal combustion engine
US4706624A (en) * 1986-06-10 1987-11-17 The Jacobs Manufacturing Company Compression release retarder with valve motion modifier
JPH02123250A (en) * 1988-10-31 1990-05-10 Isuzu Motors Ltd Turbo-retarder
DE3839452A1 (en) * 1988-11-23 1990-05-31 Daimler Benz Ag ENGINE BRAKE DEVICE FOR AN INTERNAL COMBUSTION ENGINE
US5195489A (en) * 1992-01-03 1993-03-23 Jacobs Brake Technology Corporation Push rods for pistons in compression release engine retarders

Also Published As

Publication number Publication date
DE69110054D1 (en) 1995-06-29
WO1992009792A1 (en) 1992-06-11
JPH06503139A (en) 1994-04-07
JP3326173B2 (en) 2002-09-17
SE9003735L (en) 1992-05-24
EP0558585B1 (en) 1995-05-24
EP0558585A1 (en) 1993-09-08
DE69110054T2 (en) 1995-10-19
US5315974A (en) 1994-05-31
SE9003735D0 (en) 1990-11-23

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